{"product_id":"k-n-engineering-ru-3520-universal-air-filter-3-5-inch-flange","title":"K\u0026N Engineering RU-3520 Universal Air Filter, 3.5-Inch Flange","description":"K\u0026amp;N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K\u0026amp;N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1\/16 of an inch (1.5mm) to fit in-between sizes. K\u0026amp;N universal air filters are washable and reusable.\nRegardless of the angle or offset diameter of an air intake, there is probably a K\u0026amp;N Universal air filter for your equipment. K\u0026amp;N universal air filters are washable and reusable.\nAssociated products: 25-3900 Air Filter Foam Wrap, 99-5000 Filter Care Service Kit Aerosol\n\u003cul\u003e\n  \u003cli\u003eOne year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe K\u0026amp;N Engineering RU-3520 Universal Air Filter is designed for a wide range of air-intake applications, including racing vehicles, generators, snowmobiles, tractors, radio-controlled vehicles, and other equipment. Its universal design accommodates various intake angles and offset configurations, making it a practical solution when a standard replacement filter is not suitable.\u003c\/p\u003e\u003cp\u003eBuilt for dependable service, the K\u0026amp;N RU-3520 features a strong, pliable molded rubber flange that helps absorb vibration and maintain a secure connection to the intake tube. The flange can stretch slightly to help accommodate an in-between fit, supporting easier installation across compatible applications. The reusable filter construction can be washed and serviced instead of routinely discarded, helping provide long-term value when maintained according to K\u0026amp;N recommendations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey specifications and technical data:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: K\u0026amp;N Engineering\u003c\/li\u003e\n\u003cli\u003ePart Number: RU-3520\u003c\/li\u003e\n\u003cli\u003eProduct Type: Universal air filter\u003c\/li\u003e\n\u003cli\u003eFlange Size: 3.5 inches\u003c\/li\u003e\n\u003cli\u003eFilter Shape: Round tapered design\u003c\/li\u003e\n\u003cli\u003eConstruction: Washable and reusable filter media\u003c\/li\u003e\n\u003cli\u003eFlange Material: Molded, pliable rubber\u003c\/li\u003e\n\u003cli\u003eWarranty: One-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe K\u0026amp;N Engineering RU-3520 is intended for automotive and equipment applications requiring a universal air filter. Verify the intake connection, available clearance, and application requirements before installation. This product is not CARB approved and may require acknowledgement where applicable. Associated service products include the K\u0026amp;N 25-3900 Air Filter Foam Wrap and 99-5000 Filter Care Service Kit Aerosol.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e One K\u0026amp;N Engineering RU-3520 Universal Air Filter.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUniversal Application: Designed for racing vehicles, generators, snowmobiles, tractors, radio-controlled vehicles, and other compatible equipment.\u003c\/li\u003e\n\u003cli\u003eFlexible Rubber Flange: Pliable molded rubber helps absorb vibration and supports a secure intake connection.\u003c\/li\u003e\n\u003cli\u003eWashable and Reusable: Serviceable construction allows the filter to be cleaned and reused with proper maintenance.\u003c\/li\u003e\n\u003cli\u003eAdaptable Fit: The flange can stretch slightly to help accommodate compatible intake sizes between standard measurements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":67595772068092,"sku":"RU-3520","price":98.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/a0c39094d603e153c65e077af72bc920L.jpg?v=1790573600","url":"https:\/\/diycustoms.store\/products\/k-n-engineering-ru-3520-universal-air-filter-3-5-inch-flange","provider":"diycustoms.store","version":"1.0","type":"link"}